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Saturn HurricaneIn this false-color image from NASA's Cassini spacecraft and provided by NASA/JPL shows stunning views of a monster hurricane at Saturn's North Pole. The eye of the cyclone is an enormous 1,250 miles across. That's 20 times larger than the typical eye of a hurricane here on Earth. The hurricane is believed to have been there for years.This image is among the first sunlit views of Saturn's north pole captured by Cassini's imaging cameras. (AP Photo/NASA/JPL-Caltech/SSI)

New York Spring ...A wasp hovers over a tulip on a warm spring day in Washington Park on Thursday, May 2, 2013, in Albany, N.Y. (AP Photo/Mike Groll)

Art ExhibitionVisitors stand in an installation that is part of the projet 'Weltenschoepfer' (World Creators) in a museum in Leipzig, eastern Germany, Tuesday, April 30, 2013. (AP Photo/dpa, Hendrik Schmidt)

Acadia National ...The sun's rays strike the rocky coast of Acadia National Park, in Maine, Thursday, May 2, 2013. A federal budget-related delay has pushed back the opening of many of the park's seasonal facilities until May 17. Acadia saw a 5 percent funding cut of it's roughly $7.8 million budget on March 1. The cut represented the National Park Service’s share of federal sequestration. (AP Photo/Robert F. Bukaty)

Rituals at the G...Hindu devotees offer prayers in the morning on the banks of the holy River Ganges in Varanasi, India, Monday, April 29, 2013. Varanasi is among the world's oldest cities, and millions of Hindu pilgrims gather annually here for ritual bathing and prayers in the Ganges River, considered holiest by Hindus. (AP Photo/Rajesh Kumar Singh)

Balloon VendorA balloon vendor waits for customers in a park in Beijing Monday, April 29, 2013. Monday is the first day of a three-day public holiday celebrating the upcoming international workers' day on May 1. (AP Photo/Ng Han Guan)

Sungnyemun GateA photographer takes pictures under ceiling of Sungnyemun gate in Seoul, South Korea, Monday, April 29, 2013. Five years after being torched by a disgruntled elderly man, the stone and wood southern gate to the old walled capital of Seoul has been painstakingly restored to its late 14th Century glory by a small army of master craftsmen using traditional tools. (AP Photo/Ahn Young-joon)

Australia BalletDancers Brett Chenowyth, bottom, and Lana Jones from Australian Ballet perform "Dyad 1929" in a dress rehearsal from a triple bill of works called Vanguard in Sydney, Australia, Monday, April 29, 2013. Vanguard opens at the Sydney Opera House April 30 for 20 performances. (AP Photo/Rick Rycroft)

Korea National T...Sungnyemun gate is seen in downtown Seoul, South Korea, Monday, April 29, 2013. Five years after being torched by a disgruntled elderly man, South Korea’s “No. 1 National Treasure” is set to reopen, painstakingly restored to its late 14th century glory by a small army of master craftsmen using traditional techniques and tools.(AP Photo/Ahn Young-joon)

One World Trade ...In this photo of April 26, 2013, from Bayonne, N.J., One World Trade Center rises behind the Statue of Liberty in New York. It is already New York’s tallest building. But when the last pieces of its spire go up to the roof Monday, April 28, the 104-floor skyscraper will be one step away from becoming the highest in the Western Hemisphere. (AP Photo/Mark Lennihan, File)

Germany Walpurgi...Men costumed as devils pose in front of a steam engine of a small train in Schierke, central Germany, Tuesday, April 30, 2013. Hundreds of costumed devils and witches meet to celebrate Walpurgis Night, a traditional religious holiday of pre-Christian origins. The event is named after St. Walburga, an English nun who helped convert the Germans to Christianity in the 8th century. (AP Photo/Jens Meyer)

Conch RepublicIn this Saturday, April 27, 2013 photo provided by the Florida Keys News Bureau, participants in the Conch Republic Red Ribbon Bed Race propel their entries on Duval Street in Key West, Fla. The zany contest was staged as a facet of the 31st Conch Republic Independence Celebration. The tongue-in-cheek Conch Republic was formed in 1982, when residents protested a surprise U.S. Border Patrol roadblock at the top of the Florida Keys Overseas Highway. (AP Photo/Florida Keys News Bureau, Rob O'Neal)

Windsor CastleMembers of the military take part in a march past for the President of the United Arab Emirates Sheik Khalifa bin Zayed Al Nahyan, as he stands with Britain's Queen Elizabeth II, and her husband the Duke of Edinburgh on a dias at the top of the quadrangle of Windsor Castle in Windsor, England, Tuesday, April 30, 2013. Sheik Khalifa bin Zayed Al Nahyan is on a two-day State Visit to the UK. (AP Photo/Matt Dunham-Pool)

Dutch King Wille...Dutch King Willem-Alexander is given three cheers by guests and his wife Queen Maxima inside the Nieuwe Kerk or New Church in Amsterdam, The Netherlands, during his inauguration Tuesday April 30, 2013. Around a million people are expected to descend on the Dutch capital for a huge street party to celebrate the first new Dutch monarch in 33 years. (AP Photo/Robin Utrecht, Pool)

Pilgramage on Mo...Members of the ancient Samaritan community attend the pilgrimage for the holy day of Passover at the religion's holiest site on the top of Mount Gerizim near the West Bank town of Nablus, early Tuesday, April 30, 2013. According to tradition, the Samaritans are descendants of Jews who were not deported when the Assyrians conquered Israel in the 8th century B.C. Of the small community of close to 700 people, half live in a village at Mount Gerizim, and the rest in the city of Holon near Tel Aviv. (AP Photo/Ariel Schalit)

Romania WeatherDucklings feed at sunset on a lake in Bucharest, Romania, Thursday, May 2, 2013. Romania is enjoying much warmer weather than usual for this time of the year.(AP Photo/Vadim Ghirda)

Eve of May Day i...Chinese girls dressed to look like Chinese Red Army soldiers salute for a friend taking photos on Tiananmen Square on the eve of May Day in Beijing Tuesday, April 30, 2013. The Communist Party termed its guerrilla forces the Red Army, whose primarily battled Chiang Kai-shek’s Nationalists during the 1920s and 1930s in remote mountain areas under communist control. (AP Photo/Ng Han Guan)

Grieving in Bang...A woman grieves as she sticks a pposter of a portrait of her family member on the wall of a school turned make-shift morgue on Tuesday 30, April, 2013 in Savar, near Dhaka, Bangladesh. Emergency workers hauling large concrete slabs from a collapsed 8-story building said Tuesday they expect to find many dead bodies when they reach the ground floor, indicating the death toll will be far more than the official 386. One estimate said it could be as high as 1,400. The illegally constructed, 8-story Rana Plaza collapsed on the morning of April 24, bringing down the five garment factories inside.(AP Photo/Ismail Ferdous)

Sunrise at Churc...A horse makes it's way to the track for a morning workout at Churchill Downs Tuesday, April 30, 2013, in Louisville, Ky. (AP Photo/Charlie Riedel)

Party in Amsterd...A crowd gathered in Dam Square watch as King Willem-Alexander, Queen Maxima and Princess Beatrix sign the act of abdication in the Royal Palace in Amsterdam, The Netherlands, Tuesday April 30, 2013. Around a million people are expected to descend on the Dutch capital for a huge street party to celebrate the first new Dutch monarch in 33 years. (AP Photo/Manoocher Deghati)

Rockettes Auditi...This image released by Starpix shows Liz Daniels, of San Diego, center, auditioning with other aspiring dancers for a spot with the Rockettes, Tuesday, April 30, 2013 at Radio City Music Hall in New York. Hundreds of young women from around the country are vying to appear with The Rockettes at the 2013 Radio City Christmas Spectacular. The aspiring dancers lined up Tuesday outside Radio City Music Hall for the open audition. Those who make it will return for the show that runs from Nov. 8 to Dec. 30. (AP Photo/Starpix, Amanda Schwab)

White Tiger CubA 7-year-old white tiger sits with one of her cubs at Tobu Zoo in Miyashiro, near Tokyo, Thursday, May 2, 2013. Four newborn white tiger cubs made their first public appearance at the zoo on Thursday. The four cubs - one female and three males - were born 46 days ago. (AP Photo/Koji Sasahara)

European Central...The new headquarters of the European Central Bank is under construction in Frankfurt, Germany, on Thursday, May 2, 2013. The governing council of the ECB meets in Slovakia on Thursday. (AP Photo/Michael Probst)

Extravagant Thea...In this photo taken on Wednesday, May 1, 2013, guests take their seats for a "pre-premiere" performance, put on for veterans and senior employees of the theatre at new Mariinsky Theatre in St. Petersburg, Russia. Official opening of the news stage is scheduled on Thursday, May 2. (AP Photo/Dmitry Lovetsky)

May Day MarchesImmigrants and activists march in Chicago calling for comprehensive immigration reform, Wednesday, May 1, 2013. Thousands of marchers have made their way through downtown Chicago to a rally in support of easing the nation's immigration laws. (AP Photo/Charles Rex Arbogast)

May Brings Sunsh...A man walks in a park on Wednesday, May 1, 2013, in Baltimore. Sunny weather greeted the Mid-Atlantic region on the first day of May. (AP Photo/Patrick Semansky)

"Red Hot Pokers"Kniphofia's, otherwise referred to as red hot pokers, bloom at the Sarah P. Duke Gardens in Durham, N.C., Wednesday, May 1, 2013. April showers and warming weather has brought spring flowers into bloom at Duke Gardens, a 55 acre horticultural showplace nestled in the heart of the Duke University campus. (AP Photo/Gerry Broome)

USS AnchorageThe USS Anchorage, an amphibious transport dock, makes its way up Alaska's Cook Inlet on Wednesday, May 1, 2013. The new ship will be commissioned in its namesake city on Saturday, the first-ever such commissioning ceremony in Alaska. (AP Photo/Mark Thiessen)

"April Showers B...People relax on park benches at the Public Garden in Boston, Thursday, May 2, 2013. (AP Photo/Elise Amendola)

World Trade Cent...People relax on park benches at the Public Garden in Boston, Thursday, May 2, 2013. (AP Photo/Elise Amendola)

WildfireSmoke from a wildfire in the Sandia Mountains just north of Albuquerque, N.M. is seen Thursday, May 2, 2013. Officials say the fire is around three acres and no structures are in danger. (AP Photo/Russell Contreras)

Superstorm Demol...A crew with Crowder Gulf demolition company starts demolition Thursday, May 2, 2013, in Mantoloking, N.J., of a house that was swept into Barnegat Bay by Superstorm Sandy last October 29. The demolition company expects to be finished by Friday afternoon. The house has been one of the defining images of the Oct. 29 storm. (AP Photo/Mel Evans)

Kentucky Derby H...A horse waits to take his morning workout at Churchill Downs Friday, May 3, 2013, in Louisville, Ky. Saturday will be the 139th running of the Kentucky Derby. (AP Photo/Charlie Riedel)

Birmingham Child...Students attend a civil rights program at the 16th St. Baptist Church in Birmingham, Ala., Thursday, May 2, 2013. Students from a dozen high schools and colleges marched from the church to mark the 50th anniversary of the Children's Crusade against racial segregation in 1963. The march 50 years ago was led by the Rev. Martin Luther King Jr. and ended with city leaders unleashing fire hoses and police dogs on demonstrators. More than 2,500 youth were arrested over two days. Public outcry helped spur passage of the Civil Rights Act of 1964. (AP Photo/Dave Martin)

Welcoming Ceremo...Dancers perform during a welcoming ceremony of a giant Rubber Duck created by Dutch artist Florentijn Hofman in Hong Kong Thursday, May 2, 2013. Since 2007 the 16.5-meter (54-feet)-tall Rubber Duck has traveled to various cites including Osaka, Sydney, Sao Paulo and Amsterdam. (AP Photo/Kin Cheung)

Romania Easter T...A woman carries a stone cross in a cemetery in the village of Copaciu, southern Romania, early Thursday, May 2, 2013. As part of a Holy Week tradition Romanians visit, on Maundy Thursday, the graves of their loved ones, light fires and share food with community members in memory of the departed. Orthodox worshipers celebrate Easter on May 5.(AP Photo/Andreea Alexandru, Mediafax)